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HTI, mentioned here changed their name to Hyperloop One (probably to avoid the HTI vs. HTT confusion.) Hyperloop One did perform a test http://www.popularmechanics.com/technology/infrastructure/a20830/hyperloop-one-open-track-propulsion-test/
and they opened a shop in North Las Vegas:
https://hyperloop-one.com/blog/hyperloop-one-metal-works-now-open-for-business